Il est essentiel, aux fins de la conservation du patrimoine arboricole, et important pour la biodiversité et les paysages de compléter l'article 51 en interdisant de passer de l'arboriculture aux cultures arables.
Equally important for the purpose of preserving the tree stock (which is of such importance to the landscape and to biodiversity) is the imposition (in an extension of Article 51) of a ban on switching from tree-based to seed-based cultivation.